Overview of materials for Ethylene Vinyl Alcohol (EVOH)

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Overview of materials for Ethylene Vinyl Alcohol (EVOH)
Categories:	Polymer; Thermoplastic; Ethylene Vinyl Alcohol (EVOH)
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Ethylene Vinyl Alcohol". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical Properties	Original Value	Comments

Density	1.12 - 1.24 g/cc	Average value: 1.17 g/cc Grade Count:43
Moisture Absorption at Equilibrium	1.50 - 8.50 %	Average value: 3.86 % Grade Count:7
Moisture Vapor Transmission	0.360 - 3.10 cc-mm/m²-24hr-atm	Average value: 1.13 cc-mm/m²-24hr-atm Grade Count:26
Water Vapor Transmission	14.28 - 217.1 g/m²/day @Temperature 37.8 - 37.8 °C	Average value: 126 g/m²/day Grade Count:3
Oxygen Transmission	0.00400 - 0.0640 cc-mm/m²-24hr-atm	Average value: 0.0179 cc-mm/m²-24hr-atm Grade Count:39
Oxygen Transmission Rate	0.310 - 1.55 cc/m²/day	Average value: 1.08 cc/m²/day Grade Count:4
Viscosity	170000 - 1.40e+7 cP @Temperature 200 - 230 °C	Average value: 1.81e+6 cP Grade Count:11
	170000 - 1.40e+7 cP @Shear Rate 60.0 - 270 1/s	Average value: 1.81e+6 cP Grade Count:11
Thickness	15.2 - 63.5 microns	Average value: 32.0 microns Grade Count:6
Melt Flow	0.800 - 22.0 g/10 min	Average value: 5.46 g/10 min Grade Count:38

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	85.0 - 104	Average value: 94.0 Grade Count:12
Tensile Strength, Ultimate	37.0 - 74.0 MPa	Average value: 57.3 MPa Grade Count:3
Tensile Strength, Yield	43.0 - 94.0 MPa	Average value: 66.8 MPa Grade Count:12
Film Elongation at Break, MD	70.0 - 390 %	Average value: 238 % Grade Count:16
Film Elongation at Break, TD	85.0 - 390 %	Average value: 237 % Grade Count:7
Elongation at Break	130 - 330 %	Average value: 233 % Grade Count:3
Elongation at Yield	1.00 - 8.00 %	Average value: 5.14 % Grade Count:7
Modulus of Elasticity	1.08 - 3.10 GPa	Average value: 2.16 GPa Grade Count:13
Flexural Yield Strength	108 - 150 MPa	Average value: 129 MPa Grade Count:4
Flexural Modulus	3.10 - 4.70 GPa	Average value: 4.07 GPa Grade Count:4
Secant Modulus, MD	1.02 - 3.50 GPa	Average value: 1.91 GPa Grade Count:5
Secant Modulus, TD	1.00 - 3.50 GPa	Average value: 1.86 GPa Grade Count:5
Izod Impact, Notched	0.500 - 0.900 J/cm	Average value: 0.630 J/cm Grade Count:6
Coefficient of Friction	0.200 - 0.500	Average value: 0.365 Grade Count:3
Tear Strength Test	500 - 1300	Average value: 690 Grade Count:4
Elmendorf Tear Strength MD	260 - 460 g	Average value: 367 g Grade Count:3
Elmendorf Tear Strength TD	300 - 440 g	Average value: 357 g Grade Count:3
Elmendorf Tear Strength, MD	2.02 - 30.2 g/micron	Average value: 14.3 g/micron Grade Count:6
Elmendorf Tear Strength, TD	0.525 - 28.9 g/micron	Average value: 14.1 g/micron Grade Count:6
Taber Abrasion, mg/1000 Cycles	1.20 - 2.20	Average value: 1.65 Grade Count:4
Film Tensile Strength at Break, MD	37.0 - 317 MPa	Average value: 96.7 MPa Grade Count:16
Film Tensile Strength at Break, TD	44.0 - 195 MPa	Average value: 102 MPa Grade Count:7

Electrical Properties	Original Value	Comments
Electrical Resistivity	4.70e+12 - 1.20e+13 ohm-cm	Average value: 8.35e+12 ohm-cm Grade Count:6
Surface Resistance	1.90e+15 - 2.70e+15 ohm	Average value: 2.10e+15 ohm Grade Count:7
Dielectric Constant	4.80 - 5.60	Average value: 5.30 Grade Count:15
Dissipation Factor	0.180 - 0.220	Average value: 0.213 Grade Count:15

Thermal Properties	Original Value	Comments
CTE, linear	40.0 - 130 µm/m-°C	Average value: 84.3 µm/m-°C Grade Count:22
	46.0 - 130 µm/m-°C @Temperature 55.0 - 100 °C	Average value: 71.6 µm/m-°C Grade Count:11
Specific Heat Capacity	2.40 J/g-°C	Average value: 2.40 J/g-°C Grade Count:15
Thermal Conductivity	0.340 - 0.360 W/m-K	Average value: 0.341 W/m-K Grade Count:15
Melting Point	156 - 195 °C	Average value: 176 °C Grade Count:42
Crystallization Temperature	144 - 163 °C	Average value: 156 °C Grade Count:12
Deflection Temperature at 0.46 MPa (66 psi)	80.0 - 100 °C	Average value: 91.8 °C Grade Count:11
Vicat Softening Point	155 - 173 °C	Average value: 164 °C Grade Count:11
Glass Transition Temp, Tg	48.0 - 72.0 °C	Average value: 60.5 °C Grade Count:35

Optical Properties	Original Value	Comments
Refractive Index	1.51 - 1.54	Average value: 1.53 Grade Count:14
Haze	0.500 - 7.00 %	Average value: 1.88 % Grade Count:21
Gloss	70.0 - 100 %	Average value: 86.9 % Grade Count:18

Processing Properties	Original Value	Comments
Nozzle Temperature	190 - 220 °C	Average value: 208 °C Grade Count:8
Melt Temperature	240 - 250 °C	Average value: 243 °C Grade Count:10

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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